Improvement in windmills



G. J. HAMILTON.

Windmill.

No. 223,134. Patented Dec. 30,1879.

N. PETERS. PHOTWLVTHOGRAPHER, WASHINGTON D C.

UNITED STATES PATENT OEFIoE CLARENCE J. HAMILTON, OF PLYMOUTH, MICHIGAN.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters Patent No. 223,134, dated December 30, 1879; application filed May 16, 1879.

To all whom it may concern:

Be it known that I, CLARENCE J. HAMIL- TON, of Plymouth, in the county of Wayne and State of Michigan, have invented an Improvement in Windmills, of which the following is a specification.

The nature of my invention relates to certain new and useful improvements in the construction of windmills; and the invention consistsin the peculiar construction of the sails composing the wind'wheel, in combination with a spring-spider on the main shaft, with which such sails are connected, all as more fully hereinafter set forth.

Figure 1 is a perspective View. Fig. 2 is a horizontal central section. Fig. 3 is a vertical central section, and Fig. 4 is a section through one of the sails.

In the accompanying drawings, which form a part of this specification, A represents a suitable turn-table, which is mounted upon any proper supportingframe. This turn-table is provided with a sleeve, B, through which the shaft C passes in proper bearings. Near the outer end of this shaft C is rigidly secured the hub a, which carries the arms or spokes b, to which are pivotally secured the doublewinged sails D.

E is a spider, which slides upon the shaft C, and is provided with arms 6, the outer ends of which pass through an opening at the base of the sails D. A spring, 0, around the shaft and between the hub a and spider E, compels said spider to retain its position to the rear of the hub, and causes the arms 6 to keep the sails D in the wind.

F F are lever-rods, pivoted at their centers in the outer end of the shaft C, crossing each other at that point, and carrying the weights G upon their outer ends. The lever-rods F F are connected by means of the links *5 to studs h projecting from the spider E.

A yoke, H, embraces the shaft at the back of the spider E, and has secured to it the rod j, to the free end of which is secured a rope, k, which leads down to within easy reach of the operator.

Upon theinner end of the shaft C is secured a crank pin, 5, by means of which a reciprocating motion is given to the pumprod L.

In practice, when the wind is blowing at a moderate force it strikes the sails D from the rear and causes the wheel to revolve, and by means of its connections with the pump-rod causes the latter to reciprocate. As the wind increases in force, and the wheel has a tendency to revolve with greater velocity, the weights G will gradually approach each other, forcing the spider forward upon the shaft, the arms 6 of which push upon the sails, causing them to present alesser area of their surface to the action of the wind. As the wind decreases in its force the spring 0 exerts itself upon the spider E, which slides back upon the shaft, which movement causes the sails D to assume their original position.

When it is desired to put the sails out of the wind and retain them in that position, I pull down upon the rope k, which causes the yoke H to push the spider E forward, and through its connections herein described forces the sails out of the wind, and they can be retained in this position by securing the end of the rope k.

What I claim as my invention is-'- In a wind engine, a series of sails constructed in pairs, each pair being sleeved upon a radial arm and connected to a spider sliding on the main shaft, in combination with a spring interposed between said spider and the hub of the wheel, substantially as and for the purpose described.

CLARENCE J. HAMILTON.

Witnesses:

O. SHERWOOD, ABRAM PELHAM. 

